How to pass a variable from one module to another?

Question

I know there may be a duplicate question but I've been reading and really struggling to understand and figure out how to pass a variable from a command module into an event module shown below.

Command:

exports.run = async (client, message, args) => {
    const embed = new Discord.RichEmbed()
        .addField(':heart:', `${xb.toString()}`, true)
        .addField(':black_heart:', `${ps.toString()}`, true)
        .addField(':yellow_heart:', `${nin.toString()}`, true)
        .addField(':purple_heart:', `${pcmr.toString()}`, true)

    message.channel.send(embed).then(async msg => {
        let embedid = msg.id;
        module.exports.embedid = embedid;
        await msg.react('❤');
        await msg.react('');
        await msg.react('');
        await msg.react('');
    });
}

Event:

module.exports = async (client, messageReaction, user) => {
    const message = messageReaction.message;
    const channel = message.guild.channels.find(c => c.name === 'role-assignment');
    const member = message.guild.members.get(user.id);
    if(member.user.bot) return;

    const xb = message.guild.roles.get('540281375106924555');
    const ps = message.guild.roles.get('540296583632388115');
    const nin = message.guild.roles.get('540296630260203520');
    const pcmr = message.guild.roles.get('540296669733060618');

    if(['❤', '', '', ''].includes(messageReaction.emoji.name) && message.channel.id === channel.id && messageReaction.message.id === embedid) {};

I'm hoping to pass embedid, embed2id and so on to the event module so I can filter by the message ID that is generated when sending the RichEmbed()

Thanks in advance, I've been running in circles for days!

Can you please edit your code to show proper indentation? Hard to read as it is. — jfriend00, Jan 31 '19 at 21:58
Also, it generally does you no good to assign to `module.exports` in an async callback. Anyone who loads your module won't know when that value will appear (it will not be there when they first load the module). — jfriend00, Jan 31 '19 at 21:59
Sorry, thats been changed for you and I'm using this project to learn JS so my knowledge is still pretty limited — Bret Hawker, Jan 31 '19 at 22:02
Also, nobody else will be loading or have any of my full code, its a private Discord.js bot — Bret Hawker, Jan 31 '19 at 22:04

score 0 · Answer 1 · answered Jan 31 '19 at 22:18

So I figured it out by looking into what exports actually do, which really, should have been the first thing I did, here :

What is the purpose of Node.js module.exports and how do you use it?

Using the info learned here, I made the following changes to my event:

const e1 = require('../commands/startroles'); // At the top of my messageReactionAdd.js file before module.exports[...]

messageReaction.message.id === e1.embedid // added the e1. to import the variable.

How to pass a variable from one module to another?

1 Answers1